- Bundle Includes: 1 sponge filter and 4 replacement sponges for long-term use and convenience. - Mechanically and Biologically Effective: The sponge filter provides essential mechanical and biological filtration, promoting a healthy aquarium environment. The integrated air infusion chamber creates small bubbles, enhancing oxygen solubility for better fish health. - Simple Setup and Maintenance: Easy installation—just connect an airline to the unit and activate the air pump. Cleaning is hassle-free; simply rinse and squeeze the sponge in tank water to maintain optimal performance. - Recommended for Tanks up to 60 Gallons: Ideal for tanks housing small fish such as dwarf cichlids, guppies, and killifish. This filter also suits hatcheries, maternity tanks, and fry tanks, producing minimal water current to prevent small fish from being sucked in. - User-Friendly Design: The sponge filter's efficient design ensures that your aquatic pets thrive in a stable environment without risk, making it suitable for both beginners and experienced aquarists. - Reliable Performance: Crafted for durability, this filter keeps your aquarium clean and well-aerated, enhancing overall fish vitality while allowing for easy upkeep. Perfect for specific applications: 1. Use in fry tanks where gentle filtration is crucial to protect delicate young fish. 2. Ideal for nursery tanks, supporting growing populations without disturbing the water's calmness. 3. Excellent for aquariums with small, slow-moving fish, providing an enriching habitat while maintaining a clear water column.